Well Gardener's World reckons that agapanthus seeds should be sown as soon as they are collected. Whilst the RHS tells you to store them until spring! Personally I'd sow them straight away and overwinter in an unheated greenhouse.

Thanks for that Kate and Moon grower . . . I'm never sure, but have just collected mine so will sow half now and save half for Spring :)

thank you ladies..I have just sown some and will keep some back for spring...OOOH I love an experiment :)